I need some help, I own a Roper electric dryer that is only a few years old and has worked flawlessly up until this point.
I am going to do my best to keep this post short and direct.
No heat while running
Replace heating element
While I have been around electronics and consider myself very versed in the use of multimeters. I mad mistake that almost proved deadly. During the "no heat" troubleshooting, I decided to test for presence of 240v at the heating element. I was very careful not to touch anything except the elements terminals, however, I failed to notice that my multimeter was in resistance mode. This of course resulted in a very large boom (as the meter blew up in my hand) and it also tripped the meter.
After I sat on the couch for 30 minutes to examine my life
, I unplug the dryer and test for resistance at the heating element and I found an open circuit. I then replaced the element.
At this point the dryer was geting hot even with the timer in the off position. I guessed that the short (that I created while testing) probably damaged the timer. I opened the timer and found that the terminals BL and R were welded together from the previous short. I was able to break the weld and file the contacts back smooth again. I tested the timer contacts as described in the manual and all connections seem proper.
When the timer is set to any running/heating cycle, the heating element will engage even though the start button wasn't depressed or the drum rotating. I tested the start button and it was good. I tested for shorts at the drive motor/switch for a shorted connection and found none. I also notice the timer motor seems louder and seems to wanna continue turning even in the off position. I would appreciate any/all help/suggestions.
Things I've tested:
Timer contacts - work as described on the schematic (while timer out of dryer)
Drive motor/switch - no short as found testing on switch contacts with dryer and wire harness disconnected.
Start button - not shorted, works normally
I have attached a copy of my schematic for your review.
Thanks for any/all help again,